<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <script>
        let dyq ={
            uname:'戴永琪',
            age:19,
            like:'game'
        }
        console.log(dyq)
        console.log(dyq.uname);
        dyq.age = 18;
        console.log(dyq);
        dyq.hobby = 'g'
        console.log(dyq)
    </script>
</body>
</html>